Linksys WRT120N Network Router User manual

USER GUIDE

Wireless-N Home Router

Model:

WRT120N

About This Guide

Icon Descriptions

While reading through the User Guide you may see various icons that call attention to specific items. Below is a description of these icons:

NOTE:

This check mark indicates that there is a note of interest and is something that you should pay special attention to while using the product.

WARNING:

This exclamation point indicates that there is a caution or warning and it is something that could damage your property or product.

WEB:

This globe icon indicates a noteworthy website address or e-mail address.

Online Resources

Website addresses in this document are listed without

http:// in front of the address because most current web browsers do not require it. If you use an older web browser, you may have to add http:// in front of the web address.

Resource

Linksys

Linksys

International

Glossary

Website www.linksysbycisco.com

www.linksysbycisco.com/international www.linksysbycisco.com/glossary

Network Security www.linksysbycisco.com/security

Copyright and Trademarks

Linksys, Cisco and the Cisco Logo are registered trademarks or trademarks of

Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Other brands and product names are trademarks or registered trademarks of their respective holders. Copyright © 2009 Cisco Systems,

Inc. All rights reserved.

Wireless-N Home Router

About This Guide

i


Table of Contents

Chapter 1:

Product Overview 1

Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Chapter 2:

Wireless Security Checklist 3

General Network Security Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Additional Security Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 3:

Advanced Configuration 4

Setup > Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Setup > DDNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setup > MAC Address Clone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Setup > Advanced Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wireless > Basic Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Wireless > Wireless Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Wireless > Wireless MAC Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Wireless > Advanced Wireless Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Security > Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Security > VPN Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Access Restrictions > Internet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Applications and Gaming > Single Port Forwarding. . . . . . . . . . . . . . . . . . . . . . . .19

Applications and Gaming > Port Range Forwarding . . . . . . . . . . . . . . . . . . . . . . .19

Applications & Gaming > Port Range Triggering . . . . . . . . . . . . . . . . . . . . . . . . . .20

Applications and Gaming > DMZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Applications and Gaming > QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Administration > Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Administration > Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Administration > Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Administration > Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Administration > Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Status > Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Status > Local Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Status > Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Appendix A:

Troubleshooting 28

Appendix B:

Specifications

Appendix E:

30

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Table of Contents

Warranty Information 31

Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Exclusions and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Obtaining Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Appendix D:

Regulatory Information 33

FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Safety Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Industry Canada Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Wireless Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Avis de non-responsabilité concernant les appareils sans fil . . . . . . . . . . . . . . . . . .34

Declaration of Conformity with Regard to EU Directive 1999/5/EC (R&TTE Directive) . .35

Wireless Equipment (Wireless-N/G/A/B Products) . . . . . . . . . . . . . . . . . . . . . . . . .36

CE Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

National Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Product Usage Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Technical Documents on www.linksysbycisco.com/international . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste

Electric and Electronic Equipment (WEEE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Appendix E: Software End User License Agreement 42

Cisco Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Software Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Wireless-N Home Router iii

Chapter 1

Chapter 1:

Product Overview

Thank you for choosing the Linksys by Cisco Wireless-N

Home Router. The Router lets you access the Internet via a wireless connection or through one of its four switched ports. You can also use the Router to share resources such as computers, printers and files. A variety of security features help to protect your data and your privacy while you are online. Security features include WPA2 security, a Stateful Packet Inspection (SPI) firewall, and

NAT technology. Configuring the Router is easy using the provided browser–based utility.

Front Panel

Product Overview

Wireless

(Blue) The Wireless LED lights up when the wireless feature is enabled. If the LED is flashing, the Router is sending or receiving data over the network.

Internet

(Blue) The Internet LED lights up when there is a connection made through the

Internet port. It flashes to indicate network activity over the Internet port.

Power

(Blue) The Power LED lights up and will stay on while the Router is powered on. When the Router goes through its self-diagnostic mode during every boot-up, this LED will flash.

When the diagnostic is complete, the LED will be solidly lit.

Back Panel

1, 2, 3, 4

(Blue) These numbered LEDs, corresponding with the numbered ports on the

Router’s back panel, serve two purposes. If the

LED is continuously lit, the Router is successfully connected to a device through that port. A flashing LED indicates network activity over that port.

Wi-Fi Protected Setup Button

If you have client devices, such as wireless adapters, that support Wi-Fi Protected Setup, then you can use Wi-Fi Protected Setup to automatically configure wireless security for your wireless network.

To use Wi-Fi Protected Setup, run the Setup

Wizard, or refer to Wi-Fi Protected Setup, page

11.

Wi-Fi Protected Setup LED

(Blue/

Amber) The LED lights up blue when wireless security is enabled. It flashes blue for two minutes during Wi-Fi Protected Setup.

The LED lights up amber if there is an error during the Wi-Fi Protected Setup process. Make sure the client device supports Wi-Fi Protected

Setup. Wait until the LED is off, and then try again.

The LED flashes when a Wi-Fi Protected Setup session is active. The Router supports one session at a time. Wait until the LED is solidly lit, or off before starting the next Wi-Fi Protected

Setup session.


Internet

The Internet port is where you will connect your cable or DSL Internet connection.

4, 3, 2, 1

These Ethernet ports (4, 3, 2, 1) connect the Router to computers on your wired network and other Ethernet network devices.

Reset

The Reset button is located on the right side of the product label. There are two ways to reset the Router to its factory defaults.

Either press and hold the Reset button for approximately five seconds, or restore the defaults from the Administration > Factory

Defaults screen of the Router’s browser-based utility.

Power

The Power port connects to the included power adapter.

Horizontal Placement

The Router has four rubber feet on its bottom panel. Place the Router on a level surface near an electrical outlet.

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Chapter 1

Wall-Mounting Placement

The Router has two wall-mount slots on its bottom panel. The distance between the slots is 152 mm

(6 inches).

Two screws are needed to mount the Router.

Suggested Mounting Hardware

4-5 mm 1-1.5 mm

†

Note: Mounting hardware illustrations are not true to scale.

NOTE:

Linksys is not responsible for damages incurred by insecure wall-mounting hardware.

Follow these instructions:

1. Determine where you want to mount the Router. Make sure that the wall you use is smooth, flat, dry, and sturdy. Also make sure the location is within reach of an electrical outlet.

2. Drill two holes into the wall. Make sure the holes are

152 mm (6 inches) apart.

3. Insert a screw into each hole and leave 3 mm

(0.12 inches) of its head exposed.

4. Maneuver the Router so the wall-mount slots line up with the two screws.

5. Place the wall-mount slots over the screws and slide the Router down until the screws fit snugly into the wall-mount slots.

Product Overview

152 mm


Print this page at 100% size.

Cut along the dotted line, and place on the wall to drill precise spacing.

Wall-Mounting Template

2

Chapter 2

Chapter 2:

Wireless Security Checklist

Wireless networks are convenient and easy to install, so homes with high-speed Internet access are adopting them at a rapid pace. Because wireless networking operates by sending information over radio waves, it can be more vulnerable to intruders than a traditional wired network.

Like signals from your cellular or cordless phones, signals from your wireless network can also be intercepted. Since you cannot physically prevent someone from connecting to your wireless network, you need to take some additional steps to keep your network secure.

1. Change the default wireless

network name or SSID

Wireless devices have a default wireless network name or Service Set Identifier (SSID) set by the factory. This is the name of your wireless network, and can be up to 32 characters in length. Linksys wireless products use linksys as the default wireless network name. You should change the wireless network name to something unique to distinguish your wireless network from other wireless networks that may exist around you, but do not use personal information (such as your Social Security number) because this information may be available for anyone to see when browsing for wireless networks.

2. Change the default password

For wireless products such as access points and routers, you will be asked for a password when you want to change their settings. These devices have a default password set by the factory. The Linksys default password is admin.

Hackers know these defaults and may try to use them to access your wireless device and change your network settings. To thwart any unauthorized changes, customize the device’s password so it will be hard to guess.

3. Enable MAC address filtering

Linksys routers give you the ability to enable Media Access

Control (MAC) address filtering. The MAC address is a unique series of numbers and letters assigned to every networking device. With MAC address filtering enabled, wireless network access is provided solely for wireless devices with specific MAC addresses. For example, you can specify the MAC address of each computer in your home so that only those computers can access your wireless network.


Wireless Security Checklist

4. Enable encryption

Encryption protects data transmitted over a wireless network. Wi-Fi Protected Access (WPA/WPA2) and Wired

Equivalent Privacy (WEP) offer different levels of security for wireless communication.

A network encrypted with WPA/WPA2 is more secure than a network encrypted with WEP, because WPA/WPA2 uses dynamic key encryption. To protect the information as it passes over the airwaves, you should enable the highest level of encryption supported by your network equipment.

WEP is an older encryption standard and may be the only option available on some older devices that do not support WPA.

General Network Security Guidelines

Wireless network security is useless if the underlying network is not secure. s s s s

Password protect all computers on the network and individually password protect sensitive files.

Change passwords on a regular basis.

Install anti-virus software and personal firewall software.

Disable file sharing (peer-to-peer). Some applications may open file sharing without your consent and/or knowledge.

Additional Security Tips

s s s

Keep wireless routers, access points, or gateways away from exterior walls and windows.

Turn wireless routers, access points, or gateways off when they are not being used (at night, during vacations).

Use strong passphrases that are at least eight characters in length. Combine letters and numbers to avoid using standard words that can be found in the dictionary.

WEB:

For more information on wireless security, visit www.linksysbycisco.com/security

3

Chapter 3

Chapter 3:

Advanced Configuration

After setting up the Router with the Setup Wizard (located on the CD-ROM), the Router will be ready for use. However, if you want to change its advanced settings, use the

Router’s browser-based utility. This chapter describes each web page of the utility and each page’s key functions. You can access the utility via a web browser on a computer connected to the Router.

The browser-based utility has these main tabs: Setup,

Wireless, Security, Access Restrictions, Applications &

Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs.

NOTE:

When first installing the Router, you should use the Setup Wizard on the Setup

CD-ROM. If you want to configure advanced settings, use this chapter to learn about the browser-based utility.

Access the Browser-Based Utility

To access the browser-based utility, launch the web browser on your computer, and enter the Router’s default

IP address, 192.168.1.1, in the Address field. Then press

Enter.

A login screen will appear. (Non-Windows XP users will see a similar screen.) Leave the User name field blank.

The first time you open the browser-based utility, use the default password admin. (You can set a new password from the Administration > Management screen.) Click OK to continue.

Login Screen

Setup > Basic Setup

The first screen that appears is the Basic Setup screen. This allows you to change the Router’s general settings.


Advanced Configuration

Setup > Basic Setup

Language

Select your language

To use a different language, select one from the drop-down menu. The language of the browser-based utility will change five seconds after you select another language.

Click Save Settings to apply your changes, or click Cancel

Changes to clear your changes.

Internet Setup

The Internet Setup section configures the Router to your

Internet connection. Most of this information can be obtained through your Internet Service Provider (ISP).

Internet Connection Type

Select the type of Internet connection your ISP provides from the drop-down menu. These are the available types: s

Automatic Configuration - DHCP s

Static IP s

PPPoE s

PPTP s

L2TP s

Telstra Cable

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Chapter 3

Automatic Configuration - DHCP

By default, the Router’s Internet Connection Type is set to Automatic configuration - DHCP, which should be kept only if your ISP supports DHCP or you are connecting through a dynamic IP address. (This option usually applies to cable connections.)

Internet Connection Type > Automatic Configuration - DHCP

Static IP

If you are required to use a permanent IP address to connect to the Internet, select Static IP.


Service Name (Optional)

If provided by your ISP, enter the Service Name.

Connect on Demand: Max Idle Time

You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select Connect on Demand. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. The default

Max Idle Time is 5 minutes.

Keep Alive: Redial Period

If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, select Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is

30 seconds.

PPTP

Point-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only.

Internet Connection Type > Static IP

Internet IP Address

This is the Router’s IP address, when seen from the Internet. Your ISP will provide you with the

IP Address you need to specify here.

Subnet Mask

This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask.

Default Gateway

Your ISP will provide you with the IP address of the ISP server.

DNS 1-3

Your ISP will provide you with at least one DNS

(Domain Name System) server IP address.

PPPoE

Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE.

Internet Connection Type > PPPoE

Username and Password

Enter the Username and

Password provided by your ISP.


Internet Connection Type > PPTP

If your ISP supports DHCP or you are connecting through a dynamic IP address, then select Obtain an IP Address

Automatically. If you are required to use a permanent IP address to connect to the Internet, then select Specify an

IP Address. Then configure the following: s

Specify an IP Address

This is the Router’s IP address, as seen from the Internet. Your ISP will provide you with the IP Address you need to specify here.

s

Subnet Mask

This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your

ISP will provide you with the Subnet Mask.

s

Default Gateway

Your ISP will provide you with the

IP address of the ISP server.

5

Chapter 3 s

DNS 1-3

Your ISP will provide you with at least one

DNS (Domain Name System) server IP address.

PPTP Server IP Address

Your ISP will provide you with the IP address of the PPTP server.








If you select this option, the

Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, select

Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default value is 30 seconds.

L2TP

L2TP is a service that applies to connections in Israel only.




30 seconds.

Telstra Cable

Telstra Cable is a service that applies to connections in

Australia only.

Internet Connection Type > L2TP

Server IP Address

This is the IP address of the L2TP

Server. Your ISP will provide you with the IP Address you need to specify here.








Internet Connection Type > Telstra Cable

Server IP Address

This is the IP address of the Heartbeat

Server. Your ISP will provide you with the IP Address you need to specify here.









30 seconds.

Optional Settings

Some of these settings may be required by your ISP. Verify with your ISP before making any changes.

Optional Settings

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Chapter 3

Host Name and Domain Name

These fields allow you to supply a host and domain name for the Router. Some ISPs, usually cable ISPs, require these names as identification.

You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work.

MTU

MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission.

Select Manual if you want to manually enter the largest packet size that is transmitted. To have the Router select the best MTU for your Internet connection, keep the default, Auto.

Size

When Manual is selected in the MTU field, this option is enabled. Leave this value in the 1200 to 1500 range. The default size depends on the Internet Connection Type: s

DHCP, Static IP, or Telstra: 1500 s

PPPoE: 1492 s

PPTP or L2TP: 1460

Network Setup

The Network Setup section changes the settings of the local network. Wireless setup is performed through the

Wireless tab.

Router IP

This presents both the Router’s Local IP Address and

Subnet Mask as seen by your network.

Router IP

DHCP Server Setting

The settings allow you to configure the Router’s Dynamic

Host Configuration Protocol (DHCP) server function. The

Router can be used as a DHCP server for your network. A

DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the

Router’s DHCP server option, make sure there is no other

DHCP server on your network.


DHCP Server Setting


DHCP Server

DHCP is enabled by factory default. If you already have a DHCP server on your network, or you do not want a DHCP server, then select Disabled (no other

DHCP features will be available).

DHCP Reservation

Click this button if you want to assign a fixed local IP address to a MAC address.

DHCP Reservation

You will see a list of DHCP clients with the following information: Client Name, Interface, IP Address, and

MAC Address.

DHCP Reservation s

Select Clients from DHCP Table

Click the Select check box to reserve a client’s IP address. Then click

Add Clients.

s

Manually Adding Client

To manually assign an IP address, enter the client’s name in the Enter Client

Name field. Enter the IP address you want it to have in the Assign IP Address field. Enter its MAC address in the

To This MAC Address field. Then click Add.

Clients Already Reserved

A list of DHCP clients and their fixed local IP addresses will be displayed at the bottom of the screen. If you want to remove a client from this list, click Remove.

Click Save Settings to apply your changes, or click

Cancel Changes to clear your changes. To update the on-screen information, click Refresh. To exit this screen and return to the Basic Setup screen, click Close.

Start IP Address

Enter a value for the DHCP server to start with when issuing IP addresses. Because the Router’s default IP address is 192.168.1.1, the Start IP Address must be 192.168.1.2 or greater, but smaller than 192.168.1.253.

The default is 192.168.1.100.

Maximum Number of Users

Enter the maximum number of computers that you want the DHCP server to assign IP

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Chapter 3 addresses to. This number cannot be greater than 253.

The default is 50.

IP Address Range

Displayed here is the range of available

IP addresses.

Client Lease Time

The Client Lease Time is the amount of time a network user will be allowed connection to the

Router with their current dynamic IP address. Enter the amount of time, in minutes, that the user will be “leased” this dynamic IP address. After the time has expired, the user will be automatically assigned a new dynamic IP address, or the lease will be renewed. The default is 0 minutes, which means one day.

Static DNS 1-3

The Domain Name System (DNS) is how the Internet translates domain or website names into

Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. If you wish to use another, enter that IP Address in one of these fields. You can enter up to three DNS Server IP Addresses here. The Router will use these for quicker access to functioning DNS servers.

WINS

The Windows Internet Naming Service (WINS) manages each computer’s interaction with the Internet. If you use a WINS server, enter that server’s IP Address here.

Otherwise, leave this blank.

Time Settings

Time Zone

Select the time zone in which your network functions from this drop-down menu. (You can even automatically adjust for daylight saving time.)

Time Settings



Setup > DDNS

The Router offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or other server behind the Router.

Before you can use this feature, you need to sign up for DDNS service with a DDNS service provider,

www.dyndns.org or www.TZO.com. If you do not want to use this feature, keep the default, Disabled.

DDNS

DDNS Service

If your DDNS service is provided by DynDNS.org, then select DynDNS.org from the drop-down menu. If your

DDNS service is provided by TZO, then select TZO.com.



The features available on the DDNS screen will vary, depending on which DDNS service provider you use.

DynDNS.org

Setup > DDNS > DynDNS

Username

Enter the Username for your DDNS account.

Password

Enter the Password for your DDNS account.

Host Name

The is the DDNS URL assigned by the DDNS service.

System

Select the DynDNS service you use: Dynamic,

Static, or Custom. The default selection is Dynamic.

Mail Exchange (Optional)

Enter the address of your mail exchange server, so e-mails to your DynDNS address go to your mail server.

Backup MX

This feature allows the mail exchange server to be a backup. To disable this feature, keep the default,

Disabled. To enable the feature, select Enabled. If you are not sure which setting to select, keep the default,

Disabled.

Wildcard

This setting enables or disables wildcards for your host. For example, if your DDNS address is myplace.dyndns.org and you enable wildcards, then x.myplace.dyndns.org will work as well (x is the wildcard).

To disable wildcards, keep the default, Disabled. To enable wildcards, select Enabled. If you are not sure which setting to select, keep the default, Disabled.


The Router’s Internet IP address is displayed here. Because it is dynamic, it will change.

Status

The status of the DDNS service connection is displayed here.

Update

To manually trigger an update, click this button.



8

Chapter 3

TZO.com




Setup > Advanced Routing

This screen is used to set up the Router’s advanced functions. Operating Mode allows you to select the type(s) of advanced functions you use. Dynamic Routing automatically adjusts how packets travel on your network.

Static Routing sets up a fixed route to another network destination.

Setup > DDNS > TZO

E-mail Address, TZO Key, and Domain Name

Enter the settings of the account you set up with TZO.


The Router’s Internet IP address is displayed here. Because it is dynamic, it will change.

Status

The status of the DDNS service connection is displayed here.

Update

To manually trigger an update, click this button.



Setup > MAC Address Clone

A MAC address is a 12-digit code assigned to a unique piece of hardware for identification. Some ISPs will require you to register a MAC address in order to access the

Internet. If you do not wish to re-register the MAC address with your ISP, you may assign the MAC address you have currently registered with your ISP to the Router with the

MAC Address Clone feature.

Setup > MAC Address Clone

MAC Address Clone

Enabled/Disabled

To have the MAC Address cloned, select Enabled.

MAC Address

Enter the MAC Address registered with your ISP here.

Clone My PC’s MAC

Click this button to clone the MAC address of the computer you are using.


Setup > Advanced Routing

Advanced Routing

NAT


If this Router is hosting your network’s connection to the Internet, keep the default, Enabled. If another router exists on your network, select Disabled.

When the NAT setting is disabled, dynamic routing will be enabled.

Dynamic Routing (RIP)


This feature enables the Router to automatically adjust to physical changes in the network’s layout and exchange routing tables with the other router(s).

The Router determines the network packets’ route based on the fewest number of hops between the source and the destination. When the NAT setting is enabled, the

Dynamic Routing feature is automatically disabled. When the NAT setting is disabled, this feature is available. Select

Enabled to use the Dynamic Routing feature.

Static Routing

A static route is a pre-determined pathway that network information must travel to reach a specific host or network.

Enter the information described below to set up a new static route.

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Route Entries

To set up a static route between the Router and another network, select a number from the dropdown list. Click Delete This Entry to delete a static route.

Enter Route Name

Enter a name for the Route here, using a maximum of 25 alphanumeric characters.

Destination LAN IP

The Destination LAN IP is the address of the remote network or host to which you want to assign a static route.

Subnet Mask

The Subnet Mask determines which portion of a Destination LAN IP address is the network portion, and which portion is the host portion.

Default Gateway

This is the IP address of the gateway device that allows for contact between the Router and the remote network or host.

Interface

This interface tells you whether the Destination

IP Address is on the LAN & Wireless (Ethernet and wireless networks) or the WAN (Internet).

Click Show Routing Table to view the static routes you have already set up.

Advanced Configuration as wireless adapters, that support Wi-Fi Protected Setup, then you can use Wi-Fi Protected Setup.

Configuration View

To manually configure your wireless network, select Manual. Proceed to Basic Wireless

Settings (Manual), page 10. To use Wi-Fi Protected

Setup, select Wi-Fi Protected Setup. Proceed to Wi-Fi

Protected Setup, page 11.

Basic Wireless Settings (Manual)

Advanced Routing > Routing Table

Routing Table

For each route, the Destination LAN IP address, Subnet

Mask, Gateway, and Interface are displayed. To update the information, click Refresh. To exit this screen and return to the Advanced Routing screen, click Close.



Wireless > Basic Wireless Settings

The basic settings for wireless networking are set on this screen.

There are two ways to configure the Router’s wireless network(s), manual and Wi-Fi Protected Setup.

Wi-Fi Protected Setup is a feature that makes it easy to set up your wireless network. If you have client devices, such


Wireless > Basic Wireless Settings (Manual Setup)

Network Mode

From this drop-down menu, you can select the wireless standards running on your network. If you have Wireless-N, Wireless-G, and Wireless-B devices in your network, keep the default, Mixed. If you have only

Wireless-G and Wireless-B devices in your network, select

BG-Mixed. If you have only Wireless-N devices, select

Wireless-N Only. If you have only Wireless-G devices, select Wireless-G Only. If you have only Wireless-B devices, select Wireless-B Only. If you do not have any wireless devices in your network, select Disabled.

Network Name (SSID)

The SSID is the network name shared among all points in a wireless network. The

SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed

32 characters (use any of the characters on the keyboard).

Make sure this setting is the same for all points in your wireless network. For added security, you should change the default SSID (linksys) to a unique name.

Channel Width

For best performance in a Wireless-N network, select 40MHz only. For Wireless-G and Wireless-B networking only, keep the default, 20MHz only. If you are not sure which option to use, select Auto (20MHz or

40MHz).

NOTE:

If you select 40MHz only for the Channel

Width setting, then Wireless-N can use two channels: a primary one (Wide Channel) and a secondary one (Standard Channel). This will enhance Wireless-N performance.

Wide Channel

If 40MHz only is the Channel Width setting, then this setting will be available for your primary

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Wireless-N channel. Select any channel from the dropdown menu. If you are not sure which channel to select, keep the default, Auto.

Standard Channel

If 20MHz only is the Channel Width setting, then select the appropriate channel for your wireless network. If you are not sure which channel to select, then keep the default, Auto.

If 40MHz only is the Channel Width setting, then the

Standard Channel will be a secondary channel for

Wireless-N (2.4 GHz). If you selected a specific channel for the Wide Channel setting, then the Standard Channel options will be available. Select the appropriate channel for your wireless network.

SSID Broadcast

When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the

Router’s SSID, keep the default, Enabled. If you do not want to broadcast the Router’s SSID, then select Disabled.



Wi-Fi Protected Setup

There are three methods available. Use the method that applies to the client device you are configuring.


Wi-Fi Protected Setup Configured

NOTE:

Wi-Fi Protected Setup configures one client device at a time. Repeat the instructions for each client device that supports Wi-Fi

Protected Setup.

Method #1

Use this method if your client device has a Wi-Fi Protected

Setup button.

1. Click or press the Wi-Fi Protected Setup button on the client device.

2. Click the Wi-Fi Protected Setup button on this screen.

3. After the client device has been configured, click

OK. Then refer back to your client device or its documentation for further instructions.

Wireless > Basic Wireless Settings (Wi-Fi Protected Setup)


Wi-Fi Protected Setup > Congratulations

Method #2

Use this method if your client device has a Wi-Fi Protected

Setup PIN number.

1. Enter the PIN number in the field on this screen.

2. Click Register.



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Method #3

Use this method if your client device asks for the Router’s

PIN number.

1. Enter the PIN number listed on this screen. (It is also listed on the label on the bottom of the Router.)



The Wi-Fi Protected Setup Status, Network Name (SSID),

Security, Encryption, and Passphrase are displayed at the bottom of the screen.

NOTE:

If you have client devices that do not support Wi-Fi Protected Setup, note the wireless settings, and then manually configure those client devices.

Wireless > Wireless Security

The Wireless Security screen configures the security of your wireless network. There are six wireless security mode options supported by the Router: WPA Personal,

WPA Enterprise, WPA2 Personal, WPA2 Enterprise, RADIUS, and WEP. (WPA stands for Wi-Fi Protected Access, which is a security standard stronger than WEP encryption. WEP stands for Wired Equivalent Privacy, while RADIUS stands for Remote Authentication Dial-In User Service.) These six are briefly discussed here. For detailed instructions on configuring wireless security for the Router, refer to

Chapter 2: Wireless Security Checklist, page 3.

Wireless Security

Security Mode

Select the security method for your wireless network. If you do not want to use wireless security, keep the default,

Disabled.


WPA Personal

NOTE:

If you are using WPA, then each device in your wireless network MUST use the same WPA method and shared key, or else the network will not function properly.

Security Mode > WPA Personal

Passphrase

Enter a Passphrase of 8-63 characters.

Key Renewal

Enter a Key Renewal period, which instructs the Router how often it should change the encryption keys. The default is 3600 seconds.

WPA2 Personal

Security Mode > WPA2 Personal

Encryption

WPA2 supports two encryption methods,

TKIP and AES, with dynamic encryption keys. Select the type of algorithm, AES or TKIP or AES. The default is TKIP

or AES.

Passphrase

Enter a Passphrase of 8-63 characters.

Key Renewal



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WPA Enterprise

This option features WPA used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.)


Shared Secret

Enter the key shared between the Router and the server.

Key Renewal


RADIUS

This option features WEP used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.)

IMPORTANT:

If you are using WEP, then each device in your wireless network MUST use the same WEP encryption method and key, or else the network will not function properly.

Security Mode > WPA Enterprise

RADIUS Server

Enter the IP address of the server.

RADIUS Port

Enter the port number of the server. The default is 1812.

Shared Secret


Key Renewal


WPA2 Enterprise

This option features WPA2 used with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.)

Security Mode > WPA2 Enterprise

Encryption

WPA2 supports two encryption methods,

TKIP and AES, with dynamic encryption keys. Select the type of algorithm, AES or TKIP or AES. The default is TKIP

or AES.

RADIUS Server


RADIUS Port



Security Mode > RADIUS

RADIUS Server


RADIUS Port


Shared Secret


Encryption

Select a level of WEP encryption,

40/64 bits (10 hex digits) or 104/128 bits (26 hex digits).

The default is 40/64 bits (10 hex digits).

Passphrase

Enter a Passphrase to automatically generate

WEP keys. Then click Generate.

Key 1

If you did not enter a Passphrase, enter the WEP key manually.

TX Key

TX (Transmit) Key 1 is used.

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WEP

WEP is a basic encryption method, which is not as secure as WPA.

IMPORTANT:

If you are using WEP encryption, then each device in your wireless network MUST use the same WEP encryption method and key, or else the network will not function properly.


Wireless > Wireless MAC Filter

Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius.

Security Mode > WEP

Encryption

Select a level of WEP encryption,

40/64 bits (10 hex digits) or 104/128 bits (26 hex digits).

The default is 40/64 bits (10 hex digits).

Passphrase

Enter a Passphrase to automatically generate

WEP keys. Then click Generate.

Key 1

If you did not enter a Passphrase, enter the WEP key manually.

TX Key

TX (Transmit) Key 1 is used.



Wireless > Wireless MAC Filter

Wireless MAC Filter


To filter wireless users by MAC Address, either permitting or blocking access, select Enabled. If you do not wish to filter users by MAC Address, keep the default,

Disabled.

Access Restriction

Prevent

Select this option to block wireless access by

MAC Address. This button is selected by default.

Permit

Select this option to allow wireless access by MAC

Address. This button is not selected by default.

MAC Address Filter List

Wireless Client List

Click this button to open the Wireless

Client List screen.


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Chapter 3

Wireless Client List

Wireless Client List

This screen shows computers and other devices on the wireless network. The list can be sorted by Client

Name, IP Address, MAC Address, and Status.

Select Save to MAC Address Filter List for any device you want to add to the MAC Address Filter List. Then click Add.

To update the on-screen information, click Refresh.

To exit this screen and return to the Wireless MAC Filter screen, click Close.

MAC 01-32

Enter the MAC addresses of the devices whose wireless access you want to block or allow.



Wireless > Advanced Wireless Settings

This Advanced Wireless Settings screen is used to set up the Router’s advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.

Wireless > Advanced Wireless Settings



Advanced Wireless

AP Isolation

This option isolates all wireless clients and wireless devices on your network from each other. Wireless devices will be able to communicate with the Router but not with each other. To use this option, select Enable. AP

Isolation is disabled by default.

Frame Burst

This option should provide your network with greater performance, depending on the manufacturer of your wireless products. To use this option, keep the default, Enable. To disable this option, select Disable.

Authentication Type

The Authentication Type setting is available if the Security Mode is RADIUS or WEP. The default is set to Auto, which allows either Open System or Shared Key authentication to be used. With Open

System authentication, the sender and the recipient do

NOT use a WEP key for authentication. With Shared Key authentication, the sender and recipient use a WEP key for authentication. Select Shared Key to only use Shared Key authentication.

Basic Rate

The Basic Rate setting is not actually one rate of transmission but a series of rates at which the Router can transmit. (The Basic Rate is not the actual rate of data transmission. If you want to specify the Router’s rate of data transmission, configure the Transmission Rate setting.) The Router will advertise its Basic Rate to the other wireless devices in your network, so they know which rates will be used. The Router will also advertise that it will automatically select the best rate for transmission. The default setting is Auto, when the Router can transmit at all standard wireless rates (1-2 Mbps, 5.5 Mbps, 11 Mbps,

18 Mbps, and 24Mbps). Select 1-2Mbps for use with older wireless technology. Select All, when the Router can transmit at all wireless rates.

Transmission Rate

The Transmission setting is available if the Network Mode is BG-Mixed, Wireless-G Only, or

Wireless-B Only. The rate of data transmission should be set depending on the speed of your wireless network. Select from a range of transmission speeds, or keep the default,

Auto, to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature.

Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client.

N Transmission Rate

The N Transmission setting is available if the Network Mode is Mixed or Wireless-N Only.

The rate of data transmission should be set depending on the speed of your Wireless-N networking. Select from a range of transmission speeds, or keep the default,

Auto, to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature.

Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client.

CTS Protection Mode

The Router automatically uses CTS

(Clear-To-Send) Protection Mode when your Wireless-N and

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Wireless-G devices are experiencing severe problems and are not able to transmit to the Router in an environment with heavy 802.11b traffic. This option boosts the Router’s ability to catch all Wireless-N and Wireless-G transmissions but severely decreases performance. To use this option, keep the default, Auto. To disable this option, select

Disabled.

Beacon Interval

Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network. The default is 100 milliseconds.

DTIM Interval

This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message

(DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1.

Fragmentation Threshold

This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation

Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.

RTS Threshold

Should you encounter inconsistent data flow, only minor reduction of the default value, 2347, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS

Threshold value should remain at its default value of

2347.



Security > Firewall

The Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Router’s local network.



Security > Firewall

Firewall

SPI Firewall Protection

To use firewall protection, keep the default selection, Enabled. To turn off firewall protection, select Disabled.

Internet Filter

For the following options, select the option to enable it, or deselect the option to disable it.

Filter Anonymous Internet Requests

This feature makes it more difficult for outside users to work their way into your network. This feature is enabled by default. Deselect this option to allow anonymous Internet requests.

Filter Multicast

Multicasting allows for multiple transmissions to specific recipients at the same time. If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers. Select this option to filter multicasting. This option is disabled by default.

Filter Internet NAT Redirection

This feature uses port forwarding to block access to local servers from local networked computers. Select this option to filter Internet

NAT redirection. This option is disabled by default.

Filter IDENT (Port 113)

This feature keeps port 113 from being scanned by devices outside of your local network.

This feature is enabled by default. Deselect this option to disable it.

Web Filter

For the following options, select the option to enable it, or deselect the option to disable it.

Proxy

Use of WAN proxy servers may compromise the

Gateway’s security. Denying Proxy will disable access to any WAN proxy servers. Select this option to enable proxy filtering. This option is disabled by default.

Java

Java is a programming language for websites. If you deny Java, you run the risk of not having access to Internet sites created using this programming language. Select

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Chapter 3 this option to enable Java filtering. This option is disabled by default.

ActiveX

ActiveX is a programming language for websites.

If you deny ActiveX, you run the risk of not having access to

Internet sites created using this programming language.

Select this option to enable ActiveX filtering. This option is disabled by default.

Cookies

A cookie is data stored on your computer and used by Internet sites when you interact with them. Select this option to filter cookies. This option is disabled by default.



Security > VPN Passthrough

The VPN Passthrough screen allows you to enable VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router’s firewall.


Access Restrictions > Internet Access

The Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, and websites during specific days and times.

Security > VPN Passthrough

VPN Passthrough

IPSec Passthrough

Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, keep the default, Enabled.

PPTP Passthrough

Point-to-Point Tunneling Protocol

(PPTP) allows the Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, keep the default, Enabled.

L2TP Passthrough

Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the

Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, keep the default, Enabled.




Access Restrictions > Internet Access

Internet Access Policy

Access Policy

Access can be managed by a policy. Use the settings on this screen to establish an access policy

(after Save Settings is clicked). Selecting a policy from the drop-down menu will display that policy’s settings. To delete a policy, select that policy’s number and click Delete

This Entry. To view all the policies, click Summary.

Summary

The policies are listed with the following information: No.,

Policy Name, Days, and Time of Day. To delete a policy, select the policy’s Delete option, and then click Delete.

To return to the Internet Access Policy screen, click Close.

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Summary

Status

Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and select Enabled.

To create a policy, follow steps 1-11. Repeat these steps to create additional policies, one at a time.

1. Select a number from the Access Policy drop-down menu.

2. Enter a Policy Name in the field provided.

3. To enable this policy, select Enabled.

4. Click Edit List to select which computers will be affected by the policy. The Internet Access PC List screen appears. You can select a computer by MAC address or

IP address. You can also enter a range of IP addresses if you want this policy to affect a group of computers.

After making your changes, click Save Settings to apply your changes, or click Cancel Changes to clear your changes. Then click Close.


Internet Access PC List

5. Select the appropriate option, Deny or Allow, depending on whether you want to block or allow

Internet access for the computers you listed on the

Internet Access PC List screen.

6. Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours.

7. You can block websites with specific URL addresses.

Enter each URL in a separate Website Blocking by URL

Address field.

8. You can also block websites using specific keywords.

Enter each keyword in a separate Website Blocking by

Keyword field.

9. You can filter access to various services accessed over the Internet, such as FTP or telnet. (You can block up to three applications per policy.)

From the Applications list, select the application you want to block. Then click the >> button to move it to the Blocked List. To remove an application from the

Blocked List, select it and click the << button.

10. If the application you want to block is not listed or you want to edit a service’s settings, enter the application’s name in the Application Name field. Enter its range in the Port Range fields. Select its protocol from the

Protocol drop-down menu. Then click Add.

To modify a service, select it from the Application list.

Change its name, port range, and/or protocol setting.

Then click Modify.

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To delete a service, select it from the Application list.

Then click Delete.

11. Click Save Settings to save the policy’s settings, or click Cancel Changes to clear the changes.

Applications and Gaming > Single Port

Forwarding

The Single Port Forwarding screen allows you to customize port services for common applications on this screen.

When users send these types of requests to your network via the Internet, the Router will forward those requests to the appropriate servers (computers). Before using forwarding, you should assign static IP addresses to the designated servers (use the DHCP Reservation feature on the Basic Setup screen; refer to DHCP Reservation, page 7).


To IP Address

For each application, enter the IP address of the computer that should receive the requests. If you assigned a static IP address to the computer, then you can look up its IP address; click DHCP Reservation on the

Basic Setup screen (refer to DHCP Reservation, page 7).

Enabled

For each application, select Enabled to enable port forwarding.



Applications and Gaming > Port Range

Forwarding

The Port Range Forwarding screen allows you to set up public services on your network, such as web servers, ftp servers, e-mail servers, or other specialized Internet applications. (Specialized Internet applications are any applications that use Internet access to perform functions such as videoconferencing or online gaming. Some Internet applications may not require any forwarding.)

When users send these types of requests to your network via the Internet, the Router will forward those requests to the appropriate servers (computers). Before using forwarding, you should assign static IP addresses to the designated servers (use the DHCP Reservation feature on the Basic Setup screen; refer to DHCP Reservation, page 7).

If you need to forward all ports to one computer, click the

DMZ tab.

Applications and Gaming > Single Port Forwarding

Single Port Forwarding

Common applications are available for the first five entries. Select the appropriate application. Then enter the

IP address of the server that should receive these requests.

Select Enabled to activate this entry.

For additional applications, complete the following fields:

Application Name

Enter the name you wish to give the application. Each name can be up to 12 characters.

External Port

Enter the external port number used by the server or Internet application. Check with the Internet application documentation for more information.

Internal Port

Enter the internal port number used by the server or Internet application. Check with the Internet application documentation for more information.

Protocol

Select the protocol(s) used for this application,

TCP, UDP, or Both.


Applications and Gaming > Port Range Forwarding

Port Range Forwarding

To forward a port, enter the information on each line for the criteria required.


In this field, enter the name you wish to give the application. Each name can be up to 12 characters.

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Start~End Port

Enter the number or range of port(s) used by the server or Internet applications. Check with the Internet application documentation for more information.

Protocol

Select the protocol(s) used for this application,

TCP, UDP, or Both.

To IP Address

For each application, enter the IP address of the computer that should receive the requests. If you assigned a static IP address to the computer, then you can look up its IP address; click DHCP Reservation on the

Basic Setup screen (refer to DHCP Reservation, page 7).

Enabled

Select Enabled to enable port forwarding for the applications you have defined.



Applications & Gaming > Port Range

Triggering

The Port Range Triggering screen allows the Router to watch outgoing data for specific port numbers. The IP address of the computer that sends the matching data is remembered by the Router, so that when the requested data returns through the Router, the data is pulled back to the proper computer by way of IP address and port mapping rules.


Forwarded Range

For each application, enter the starting and ending port numbers of the forwarded port number range. Check with the Internet application documentation for the port number(s) needed.

Enabled

Select Enabled to enable port triggering for the applications you have defined.



Applications and Gaming > DMZ

The DMZ feature allows one network computer to be exposed to the Internet for use of a special-purpose service such as Internet gaming or videoconferencing.

DMZ hosting forwards all the ports at the same time to one computer. The Port Range Forwarding feature is more secure because it only opens the ports you want to have opened, while DMZ hosting opens all the ports of one computer, exposing the computer to the Internet.

Applications and Gaming > Port Range Triggering

Port Range Triggering


Enter the application name of the trigger.

Triggered Range

For each application, enter the starting and ending port numbers of the triggered port number range. Check with the Internet application documentation for the port number(s) needed.


Applications and Gaming > DMZ

DMZ

Any computer whose port is being forwarded must have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function.


To disable DMZ hosting, select

Disabled. To expose one computer, select Enabled. Then configure the following settings:

Source IP Address

If you want any IP address to be the source, select Any IP Address. If you want to specify an IP address or range of IP addresses as the designated source, select and complete the IP address range fields.

Destination

If you want to specify the DMZ host by IP address, select IP Address and enter the IP address in the field provided. If you want to specify the DMZ host

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Chapter 3 by MAC address, select MAC Address and enter the MAC address in the field provided. To retrieve this information, click DHCP Client Table.

DMZ > DHCP Client Table

DHCP Client Table

The DHCP Client Table lists computers and other devices that have been assigned IP addresses by the

Router. The list can be sorted by Client Name, Interface,

IP Address, MAC Address, and Expires time (how much time is left for the current IP address). To select a DHCP client, click Select. To update the on-screen information, click Refresh. To exit this screen and return to the DMZ screen, click Close.



Applications and Gaming > QoS

Quality of Service (QoS) ensures better service to high-priority types of network traffic, which may involve demanding, real-time applications, such as videoconferencing.


WMM Support

If you have other devices that support

Wi-Fi Multimedia (WMM) on your network, keep the default, Enabled. Otherwise, select Disabled.

No Acknowledgement

If you want to disable the Router’s

Acknowledgement feature, so the Router will not re-send data if an error occurs, then select Enabled. Otherwise, keep the default, Disabled.

Internet Access Priority

In this section, you can set the bandwidth priority for a variety of applications and devices. There are four levels priority: High, Medium, Normal, or Low. When you set priority, do not set all applications to High, because this will defeat the purpose of allocating the available bandwidth.

If you want to select below normal bandwidth, select Low.

Depending on the application, a few attempts may be needed to set the appropriate bandwidth priority.


To use the QoS policies you have set, keep the default, Enabled. Otherwise, select Disabled.

Category

Select one of the following categories: Applications,

Online Games, MAC Address, Ethernet Port, or Voice

Device. Proceed to the instructions for your selection.

Summary

This lists the QoS entries you have created for your applications and devices. Refer to Summary, page 22 for more information.

Applications

Application

Select the appropriate application. If you select Add a New Application, follow the Add a New

Application instructions.

Priority

Select the appropriate priority: High, Medium

(Recommend), Normal, or Low.

Click Add to save your changes. Your new entry appears in the Summary list.

Add a New Application

Applications and Gaming > QoS

QoS (Quality of Service)

Wireless

You can configure the support and No Acknowledgement settings in this section.


QoS > Add a New Application

Enter a Name

Enter any name to indicate the name of the entry.

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Port Range

Enter the port range that the application will be using. For example, if you want to allocate bandwidth for FTP, you can enter 21-21. If you need services for an application that uses from 1000 to 1250, you enter 1000-

1250 as your settings. You can have up to three ranges to define for this bandwidth allocation. Port numbers can range from 1 to 65535. Check your application’s documentation for details on the service ports used.

Select the protocol TCP or UDP, or select Both.

Priority




Online Games

MAC Address


QoS > MAC Address

Enter a Name

Enter a name for your device.

MAC Address

Enter the MAC address of your device.

Priority




Ethernet Port

QoS > Online Games

Game

Select the appropriate game. If you select Add a

New Game, follow the Add a New Game instructions.

Priority




Add a New Game

QoS > Ethernet Port

Ethernet

Select the appropriate Ethernet port.

Priority




Voice Device

QoS > Add a New Game

Enter a Name

Enter any name to indicate the name of the entry.

Port Range

Enter the port range that the game will be using. You can have up to three ranges to define for this bandwidth allocation. Port numbers can range from 1 to

65535. Check your application’s documentation for details on the service ports used.

Select the protocol TCP or UDP, or select Both.

Priority





QoS > Voice Device

My Voice Device’s MAC Address

The MAC address of your voice device is automatically displayed.

Enter a Name

Enter a name for your voice device.

MAC Address

Enter the MAC address of your voice device.

Priority

Select the appropriate priority:

High

(Recommend), Medium, Normal, or Low.


Summary

This lists the QoS entries you have created for your applications and devices.

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Priority

This column displays the bandwidth priority of

High, Medium, Normal, or Low.

Name

This column displays the application, device, or port name.

Information

This column displays the port range or

MAC address entered for your entry. If a pre-configured application or game was selected, there will be no valid entry shown in this section.

Remove

Click this button to remove an entry.

Edit

Click this button to make changes.



Administration > Management

The Administration > Management screen allows the network’s administrator to manage specific Router functions for access and security.

Administration > Management

Management

Router Access

To ensure the Router’s security, you will be asked for your password when you access the Router’s browser-based utility. The default is admin.

Router Password

Enter a new password for the Router.

Re-enter to confirm

Enter the password again to confirm.



Local Management Access

Access via

HTTP (HyperText Transport Protocol) is the communications protocol used to connect to servers on the World Wide Web. HTTPS uses SSL (Secured Socket

Layer) to encrypt data transmitted for higher security.

Select HTTP or HTTPS. HTTP is the default.

Access via Wireless

If you are using the Router in a public domain where you are giving wireless access to your guests, you can disable wireless access to the Router’s browser-based utility. You will only be able to access the utility via a wired connection if you disable the setting.

Keep the default, Enabled, to allow wireless access to the utility, or select Disabled to block wireless access to the utility.

Remote Management Access

Remote Management

To permit remote access of the

Router, from outside the local network, select Enabled.

Otherwise, keep the default, Disabled.

Access via HTTP (HyperText Transport Protocol) is the communications protocol used to connect to servers on the World Wide Web. HTTPS uses SSL (Secured Socket

Layer) to encrypt data transmitted for higher security.

Select HTTP or HTTPS. HTTP is the default.

Remote Upgrade

If you want to be able to upgrade the

Router remotely, from outside the local network, select

Enabled. (You must have the Remote Management feature enabled as well.) Otherwise, keep the default,

Disabled.

Allowed Remote IP Address

If you want to be able to access the Router from any external IP address, select Any

IP Address. If you want to specify an external IP address or range of IP addresses, then select the second option and complete the fields provided.

Remote Management Port

Enter the port number that will be open to outside access.

NOTE:

When you are in a remote location and wish to manage the Router, enter

http://xxx.xxx.xxx.xxx:yyyy or

https://xxx.xxx.xxx.xxx:yyyy, depending on whether you use HTTP or HTTPS. Enter the

Router’s specific Internet IP address in place of xxx.xxx.xxx.xxx, and enter the Remote

Management Port number in place of yyyy.

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Chapter 3

UPnP

Universal Plug and Play (UPnP) allows the appropriate

Windows operating system to automatically configure the

Router for various Internet applications, such as gaming and videoconferencing.

UPnP

To use UPnP, keep the default, Enabled. Otherwise, select Disabled.

Allow Users to Configure

Keep the default, Enabled, if you want to be able to make manual changes to the

Router while using the UPnP feature. Otherwise, select

Disabled.

Allow Users to Disable Internet Access

Select Enabled, if you want to be able to prohibit any and all Internet connections. Otherwise, keep the default, Disabled.

Backup and Restore

Backup Configuration

To back up the Router’s configuration settings, click this button and follow the on-screen instructions.

Restore Configuration

To restore the Router’s configuration settings, click this button and follow the on-screen instructions. (You must have previously backed up the Router’s configuration settings.)

System Reboot

Start to Reboot

If you need to restart the Router, click this button.



Administration > Log

The Router can keep logs of all traffic for your Internet connection.


Log > View Log

Log

s

Type

Select Incoming Log, Outgoing Log, Security

Log, or DHCP Client Log. s

<Type> Log

The Incoming Log displays a temporary log of the source IP addresses and destination port numbers for the incoming Internet traffic. The

Outgoing Log displays a temporary log of the local IP addresses, destination URLs/IP addresses, and service/ port numbers for the outgoing Internet traffic. The

Security log displays the login information for the browser-based utility. The DHCP Client Log displays the LAN DHCP server status information.

Click Save the Log to save this information to a file on your computer’s hard drive. Click Refresh to update the log. Click Clear to clear all the information that is displayed.



Administration > Diagnostics

The diagnostic tests (Ping and Traceroute) allow you to check the connections of your network devices, including connection to the Internet.

Administration > Log

Log


To disable the Log function, select

Disabled. To monitor traffic between the network and the

Internet, keep the default, Enabled. With logging enabled, you can choose to view temporary logs.

View Log

To view the logs, click View Log.


Administration > Diagnostics

24

Chapter 3

Diagnostics

Ping Test

Ping checks the status of a connection.

IP or URL Address

Enter the address of the computer whose connection you wish to test.

Packet Size

Enter the packet size you want to use. The default is 32 bytes.

Number to Ping

Enter the number of times you wish to test the connection. The default is 5.

Start to Ping

To run the test, click this button. The Ping screen shows if the test is successful. Click Close to return to the Diagnostics screen.


Administration > Factory Defaults

Restore the Router to its factory default settings.

Diagnostics > Ping

Traceroute Test

Traceroute checks the performance of a connection.

IP or URL Address

Enter the address of the computer whose connection you wish to test.

Start to Traceroute

To run the test, click this button. The

Traceroute screen shows if the test is successful. Click Close to return to the Diagnostics screen.

Administration > Factory Defaults

NOTE:

Do not restore the factory defaults unless you are having difficulties with the Router and have exhausted all other troubleshooting measures. Once the Router is reset, you will have to re-enter all of your configuration settings.

Factory Defaults

Restore All Settings

To reset the Router’s settings to the defaults, click this button and then follow the on-screen instructions. Any custom settings you have saved will be lost when the default settings are restored.

Administration > Firmware Upgrade

The Firmware Upgrade screen allows you to upgrade the

Router’s firmware. Do not upgrade the firmware unless you are experiencing problems with the Router or the new firmware has a feature you want to use.

Diagnostics > Traceroute


Administration > Firmware Upgrade

NOTE:

The Router may lose the settings you have customized. Before you upgrade its firmware, write down all of your custom settings.

After you upgrade its firmware, you may have to re-enter all of your configuration settings.

25

Chapter 3

Firmware Upgrade

Before upgrading the firmware, download the Router’s firmware upgrade file from the Linksys website,

www.linksysbycisco.com.

Please select a file to upgrade

To select the firmware upgrade file, click Browse and follow the on-screen instructions.

Start to Upgrade

After you have selected the appropriate file, click this button, and follow the on-screen instructions.

WARNING:

The firmware upgrade must not be interrupted; do not reboot or power off the

Router during the firmware upgrade.

Status > Router

The Router screen displays information about the Router and its current settings.


Domain Name

The Domain Name of the Router is displayed (if it was entered on the Setup > Basic Setup screen).

Internet Connection

This section shows the current network information stored in the Router. The information varies depending on the Internet connection type selected on the Setup > Basic

Setup screen.

Select Release IP Address or Renew IP Address as appropriate to release or renew a DHCP lease.

Click Refresh to update the on-screen information.

Status > Local Network

The Local Network screen displays information about the local, wired network.

Status > Router

Router Information

Firmware Version

The version number of the Router’s current firmware is displayed.

Boot Code Version

The version number of the Router’s boot code is displayed.

Firmware Verification

The unique identifier of the firmware is displayed.

Current Time

The time set on the Router is displayed.

Internet MAC Address

The Router’s MAC Address, as seen by your ISP, is displayed.

Host Name

The Host Name of the Router is displayed (if it was entered on the Setup > Basic Setup screen).


Status > Local Network

Local Network

Local MAC Address

The MAC address of the Router’s local, wired interface is displayed.

Router IP Address

The Router’s IP address, as it appears on your local network, is displayed.

Subnet Mask

The Subnet Mask of the Router is displayed.

DHCP Server

DHCP Server

The status of the Router’s DHCP server function is displayed.

Start IP Address

For the range of IP addresses that can be used by devices on your local network, the starting IP address is displayed.

End IP Address

For the range of IP addresses that can be used by devices on your local network, the ending IP address is displayed.

DHCP Clients Table

Click this button to view a list of computers or other devices that are using the Router as a DHCP server.

26

Chapter 3

DHCP Clients Table

DHCP Client Table

The DHCP Client Table lists computers and other devices that have been assigned IP addresses by the

Router. The list can be sorted by IP Address, MAC

Address, Interface, and Client Name. To remove a

DHCP client, click Delete. To update the on-screen information, click Refresh. To exit this screen and return to the Local Network screen, click Close.

Status > Wireless Network

The Wireless Network screen displays information about your wireless network.


Security

The wireless security method used by the Router is displayed.

SSID Broadcast

The status of the SSID Broadcast feature is displayed.

Status > Wireless

Wireless Network

MAC Address

The MAC address of the Router’s local, wireless interface is displayed.

Mode

The wireless mode used by the network is displayed.

Network Name (SSID)

The name of the wireless network, which is also called the SSID, is displayed.

Channel Width

The Channel Width setting (selected on the Wireless > Basic Wireless Settings screen) is displayed.

Wide Channel

The Wide Channel setting (selected on the Wireless > Basic Wireless Settings screen) is displayed.

Standard Channel

The Standard Channel setting

(selected on the Wireless > Basic Wireless Settings screen) is displayed.


27

Appendix A

Appendix A:

Troubleshooting

Your computer cannot connect to the Internet.

Follow these instructions until your computer can connect to the Internet: s s

Make sure that the Router is powered on. The Power

LED should be lit and not flashing.

If the Power LED is flashing, then power off all of your network devices, including the modem, Router, and computers. Then power on each device in the following order:

1. Cable or DSL modem

2. Router

3. Computer s

Check the cable connections. The computer should be connected to one of the ports numbered 1-4 on the Router, and the modem must be connected to the

Internet port on the Router.

The modem does not have an Ethernet port.

The modem is a dial-up modem for traditional dial-up service. To use the Router, you need a cable/DSL modem and high-speed Internet connection.

You cannot use the DSL service to connect manually to the Internet.

After you have installed the Router, it will automatically connect to your Internet Service Provider (ISP), so you no longer need to connect manually.

The DSL telephone line does not fit into the Router’s

Internet port.

The Router does not replace your modem. You still need your DSL modem in order to use the Router. Connect the telephone line to the DSL modem, and then insert the setup CD into your computer. Click Setup and follow the on-screen instructions.

When you double-click the web browser, you are prompted for a username and password. If you want to get rid of the prompt, follow these instructions.

Launch the web browser and perform the following steps

(these steps are specific to Internet Explorer but are similar for other browsers):

1. Select Tools > Internet Options.

2. Click the Connections tab.

3. Select Never dial a connection.


Troubleshooting

4. Click OK.

The Router does not have a coaxial port for the cable connection.

The Router does not replace your modem. You still need your cable modem in order to use the Router. Connect your cable connection to the cable modem, and then insert the setup CD into your computer. Click Setup and follow the on-screen instructions.

The computer cannot connect wirelessly to the network.

Make sure the wireless network name or SSID is the same on both the computer and the Router. If you have enabled wireless security, then make sure the same security method and key are used by both the computer and the

Router.

You need to modify the settings on the Router.

Open the web browser (for example, Internet Explorer or

Firefox), and enter the Router’s IP address in the address field (the default IP address is 192.168.1.1). When prompted, enter the password to the Router (the default is

admin). Click the appropriate tab to change the settings.

WEB:

If your questions are not addressed here, refer to the Linksys website,

www.linksysbycisco.com

28

Appendix A

Troubleshooting


29

Appendix B

Appendix B:

Specifications

Model

Standards

LEDs

Ports

Buttons

Cabling Type

WRT120N

IEEE 802.3u, 802.11g, 802.11b,

Draft 802.11n

Power, Internet, Wireless, Wi-Fi

Protected Setup™, Ethernet (1-4)

Internet, Ethernet (1-4), Power

Reset, Wi-Fi Protected Setup™

Cat 5

# of Antennas

Detachable (y/n)

Modulations

Transmitted Power in dBm

2 (internal)

No

802.11b: CCK/QPSK, BPSK

802.11g: OFDM/BPSK, QPSK,

16-QAM, 64-QAM

802.11n: OFDM/BPSK, QPSK,

16-QAM, 64-QAM

802.11b: 16.5 ± 1.5 dBm (typical)

802.11g: 13.5 ± 1.5 dBm (typical)

802.11n: 13.5 ± 1.5 dBm (typical)

Receive Sensitivity in dBm -94 dBm (typical) @ 1 Mbps

-90 dBm (typical) @ 11 Mbps



Antenna Gain in dBi 2.0 (max)

UPnP able/cert Able

Wireless Security Wi-Fi Protected Access™ 2 (WPA2),

WEP, Wireless MAC Filtering

Security Key Bits Up to 128-Bit Encryption

OS Requirements Windows XP, Vista, or Vista 64-Bit

Edition with Latest Updates (for

Network Magic and Setup Wizard)

Mac OS X 10.4 or higher (for

Setup Wizard)

Environmental

Dimensions

Unit Weight

Power

Certifications

7.99" x 1.38" x 6.30"

(203 x 35 x 160 mm)

8.4 oz (238 g)

12V, 1A

FCC, UL/cUL, ICES-003, RSS210, CE,

Wi-Fi (IEEE 802.11b/g), WPA2™,

WMM®, Wi-Fi Protected Setup™

Operating Temp. 0 to 40°C (32 to 104°F)

Storage Temp. -20 to 60°C (-4 to 140°F)


Specifications

Operating Humidity 10 to 80%, Noncondensing

Storage Humidity 5 to 90% Noncondensing

Specifications are subject to change without notice.

30

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